import cv2
import numpy as np

girl = cv2.imread("../asset/girl.jpeg")
print(girl.shape)
# y x channel
img = np.ones((960, 1280, 3), np.uint8) * 50
result = cv2.subtract(girl, img)
while True:
    cv2.imshow('result', result)
    cv2.imshow('girl', girl)
    key = cv2.waitKey(10)
    if key & 0xFF == ord('q'):
        break

cv2.destroyAllWindows()
